* to the set.
   *
   * <p><b>Warning:</b> This method assumes that for any instance {@code k} of key type {@code K},
   * {@code k.equals(k2)} implies that {@code k2} is also of type {@code K}. Using a key type for
   * which this may not hold, such as {@code ArrayList}, may risk a {@code ClassCastException} when
   * calling methods on the resulting map view.
   *

   * to the set.
   *
   * <p><b>Warning:</b> This method assumes that for any instance {@code k} of key type {@code K},
   * {@code k.equals(k2)} implies that {@code k2} is also of type {@code K}. Using a key type for
   * which this may not hold, such as {@code ArrayList}, may risk a {@code ClassCastException} when
   * calling methods on the resulting map view.
   *

* HPA: fixed wrong count for target replicas calculations ([#34821](https://github.com/kubernetes/kubernetes/pull/34821)). ([#34955](https://github.com/kubernetes/kubernetes/pull/34955), [@jszczepkowski](https://github.com/jszczepkowski))
* Improves how 'kubectl' uses the terminal size when printing help and usage. ([#34502](https://github.com/kubernetes/kubernetes/pull/34502), [@fabianofranz](https://github.com/fabianofranz))

            if (this.transportContext.getConfig().isStrictResourceLifecycle()) {
                th.close();
            } else {
                // Let connection pooling handle cleanup - this improves performance
                // for scenarios where the same file or directory is accessed multiple times
                log.trace("Tree handle released to connection pool for reuse");

- Optimized kube-proxy conntrack cleanup logic, reducing the time complexity of deleting stale UDP entries. This significantly improves performance when there are many stale connections to clean up. ([#135511](https://github.com/kubernetes/kubernetes/pull/135511), [@aojea](https://github.com/aojea)) [SIG Network]

* The implicit registration of Prometheus metrics for request count and latency have been removed, and a plug-able interface was added. If you were using our client libraries in your own binaries and want these metrics, add the following to your imports in the main package: "k8s.io/pkg/client/metrics/prometheus".  ([#30638](https://github.com/kubernetes/kubernetes/pull/30638), [@krousey](https://github.com/krousey))